@inproceedings{oai:kyutech.repo.nii.ac.jp:00004412,
 author = {Hikita, Masayuki and 匹田, 政幸 and Kozako, Masahiro and 小迫, 雅裕 and Takada, Hajime and Hayashi, Masayuki and Higashiyama, Masakazu and Hirose, Tatsuya and Nakamura, Yusuke and Nakamura, Shuhei and Umemura, Tokihiro},
 book = {2011 Electrical Insulation Conference (EIC)},
 month = {Jun},
 note = {It is crucial for proper insulation design of cast resin transformer to consider voids and delamination which might exist in cast molding process and/or under long-term operation because of several surface boundaries between resin and conductor. Should such defects in the insulation system exist, it would lead to reduction of the life of the apparatus. In this report, we investigate the relation between the void size and apparent charge of partial discharge (PD) occurring in a model simulating the insulation system of cast resin transformer. It is also important to determine necessary PD detection sensitivity of PD test in a factory as well as in a field. In addition, we investigate X-ray irradiation induced discharge of spherical void in epoxy resin. Physical consideration of the effect of X-ray irradiation on void discharges in epoxy resin was also made. Time lag of void discharges in epoxy resin was also made with attenuation of X-ray irradiation dose considered., 2011 Electrical Insulation Conference (EIC), 5-8 June 2011, Annapolis, MD},
 pages = {463--467},
 publisher = {IEEE},
 title = {X-ray Irradiation Induced Discharge of Spherical Void in Epoxy Resin},
 volume = {2011},
 year = {2011},
 yomi = {ヒキタ, マサユキ and コザコ, マサヒロ}
}